Apple today released GarageBand 4.1 which addresses isolated graphic display issues, compatibility with 3rd party audio software, fixes minor problems with Magic GarageBand, and supports general compatibility issues.
Note: In order to install this update you will need to download the iLife Support 8.1 update first. The iLife update supports system software components used by all iLife application, improves overall stability, addresses a number of other minor issues and supports general compatibility issues.
GarageBand 4.1 is available via Software Update and also as a standalone installer.
More info and download link (46.1MB) here.
[Thanks to MacDailyNews Reader “Jim – TIV” for the heads up.]